Belgium in August: Weather, Crowds & What to Expect
Climate Map for August
Average temperature across Belgium in August.
City Weather in August
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| City of Brussels | 24° | 14° | 62 mm | high | Mild |
| Antwerp | 23° | 14° | 61 mm | high | Mild |
| Gent | 23° | 14° | 59 mm | high | Mild |
| Charleroi | 24° | 13° | 63 mm | high | Mild |
| Liège | 24° | 13° | 78 mm | high | Mild |
| Bruges | 22° | 13° | 69 mm | high | Cool |
| Namur | 23° | 13° | 70 mm | high | Mild |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
Belgian Coast (West Flanders - Ostend, Knokke, De Panne)
August remains the peak month for beachgoing and festivals; extended sunshine and humid spells can make the air feel warmer than the thermometer suggests, particularly during heatwaves that occasionally push temperatures higher inland. Coastal waters are at their warmest for the year, and boat trips to barrier islands or seal-watching along the Zwin are available but can be affected by afternoon winds. Expect busy promenades, reserve restaurants in advance, and carry sunscreen plus a light windproof layer.
Flanders & Canal Cities (Bruges, Ghent, Antwerp)
August keeps summer warmth and busy streets, with festival highlights like the Gentse Feesten drawing big domestic and international crowds to Ghent’s centre. On hot days the inner-city stone can radiate heat; green spaces like Citadel Park provide shade for cooling off. Be prepared for sudden thunderstorms that can cause temporary flooding on narrow streets - a light foldable umbrella is useful.
Brussels & Central Plateau (Brussels, Leuven, Mechelen)
August sees continued warm weather and is often the busiest for family travel and festivals; while some locals leave for holidays, cultural events and temporary exhibitions keep the city lively. Afternoon thunderstorms are the main weather annoyance and can produce sudden heavy rain but usually pass quickly. Pack an umbrella and lightweight clothing; late summer evenings are ideal for exploring illuminated squares.
The Ardennes & High Fens (Spa, La Roche-en-Ardenne, Malmedy, Baraque Michel)
August keeps summer warmth and is one of the busiest months for the Ardennes: camping sites fill, river activities peak, and motorsport events at Spa bring crowds to the area. The highest plateaus remain cooler and are a relief from inland heat; thunderstorms still appear and can make forest trails slippery. For festival-goers or race watchers, book early and carry rain protection and sturdy footwear for uneven terrain.